Is it normal to have cockroaches at home?

Hello, the weather is hot and humid in summer, and the activities of cockroaches begin to be frequent. It is normal to have cockroaches. After all, they are creatures that have lived on the earth for 30 thousand years! Cockroaches like to live in dark and humid places, such as sewers and toilets. Cockroaches generally live in groups. If you see one, you may have a nest there, but you can't find its nest. If you find it, you have to kill it in time.